Attachment for box-nailing machines



(No Model.)

' MTNESEES M 3M 9 94ml.

ATTACHMENT FOR BOX NAILING MACHINES.

- r r QSheets-Sheet 1.- Y

B. S. ATWOOD.

Patented Oct. 1, 1895.-

(No Model.) t. 2 Sheets-Sheet 2.

B. SQATWOOD. ATTAGHMENT FOR BOX NAILING MACHINES. No. 547,108. PatentedOct. 1, 1895.

F-i -4- Y VM'ITPIEESEEI j l-plxAzN-rng ANDREW ELEMMM.PHUI'WUTNDVWASHINGTQN. D Cv llNrTnn STATES FFIQEE,

P T NT ATTACHMENT FOR BOX-=NAILING MACHINES.

SPECIFICATION forming part of Letters Patent No. 517,108, dated October1, 1895.

Application filed June 30, 1894. Serial No. 516,199. (No model.)

To aZZ whom it may concern:

Be it known that I, BENJAMIN S. A'rwooi), of Whitman, in the county ofPlymouth and State of Massachusetts, have invented certain new anduseful Improvements in Attachments for Box-Nailing Machines, of whichthe following, taken in connection with the accompanying drawings, is aspecification.

My invention relates to a device to be connected to abox-nailing-machine table; and it consists of an adjustable bar which isadapted to serve as a support for a box while a metal strip is beingnailed to the top or bottom of the same and to be pushed out of the waywhile the metal strip is being nailed to either side of the box, inwhich case the box rests directly upon the table, the object being tosave the adjustment of the table to meet the different dimensions ofwidth and depth of box, an operation that requires considerableadditional labor. This object I attain by the mechanism shown in theaccompanying drawings, in which Figure 1 represents in perspective aView of parts of a box-nailing machine and its boxsupporting table withmy improvement attached. Fig. 2 represents in perspective a box having ametal strip nailed to it, Fig. 3 is a vertical section of parts of abox-nailing machine, showing the position of a box when resting upon myadjustable bar. Fig. 4 is a vertical section showing parts of abox-nailing machine and table, my adjustable bar being represented asbeing pushed back out of the way of the box; Fig. 5, details.

In the drawings only such parts of a boxnailing machine are shown as arerequired for an understanding of the construction and use of myattachment.

In the drawings Arepresents 'a box-n ailing machine of a well-knownclass, and B is a table made in the usual manner.

I will now describe my attachment. 0 C, Fig. 1, are two projectionsextending from the edge of the table, as shown, there being similar oneson the other edge. (Not shown.) D is a rod adapted to slide in holesmade in the projections O 0. Each of the rodsD has attached to its end ahead-block F, and also has a spring E, buttressed against the projection 0 and reacting against a pin D' in the rod D, the tendency of thespring E being to draw the head block F against the projection C andhold it in that position unless force is applied to keep it away,Guide-pins K extend upward, one from each of the headblocks F, and serveto keep the adjustable bar II in place. The bar H extends entirelyacross the table, as shown. This bar II may be made of any desireddimensions and is provided with adj HSlllIlg-blOOkS L L. (See Figs. 1and 5.) These blocks are made of various heights, so that when placedunder the bar Hits upper face may be at any desired height above thesurface of the table B. The difference of level between the top of thebar H and the table B is adjusted to the box upon which the metal stripS S is to be nailed that is, when the box is placed with its shortestdimension vertical, as illustrated in Fig. 3, then it must rest upon thetop of the bar H; but when it is placed with the longer dimensionvertical, then it rests directly upon the table, as shown in Fig. 4. Inother Words, the difference between the level of the table and the topof the bar H must be equal to the difierence between the shorter andlonger dimension of the box-=2. 6., the difference between P R and R T.(See Fig. 2.)

M, Figs. 1, 2, and 3, represent an adjustable swinging bar to be used asa support for the outer end of the box while it is being nailed. (SeeFig. 3.) This bar is bent as shown,its ends passing through blocks N,one of which is shown in Fig. 1. Each of the blocks N is adapted to turnon a pin N, and is held yieldingly in place by a spring M When not inuse the bar M may be turned down, as shown in Fig. 4. The ends of thebar are held in the blocks N by set-screws h The bar H may be used as agage by adding set-screws to the projections O C, so that the rods D maybe clamped and thus hold the bar H in any desired position.

I claim-- 1. In a box nailing machine, the combina tion of aboxsupporting table, a bar H adapted to serve as a rest for the box beingnailed and vertically adjustable as described,said bar being mounted onhorizontally sliding blocks to admit of its being pushed back out of theway of the box when not required, and said sliding blocks, substantiallyas and for the purpose set forth.

In a box nailing machine, the combinaname to this specification, in thepresence of tion of a box supporting table, an adjustable twosubscribing witnesses, on this 27th day 10 bar 1I provided with guidepins K adapted of June, A. D. 1894. to Work vertically in thehorizontally sliding 5 blocks F, and the said sliding blocks F all op-BENJAMIN ATlVOOD' erating together substantially as and for theWitnesses: purpose set forth. FRANK G. PARKER,

In testimony whereof I have signed my FRANK G. IIATTIE.

